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Finding the Fourth Proportional to 479,709.72, 661,995.18 and 264,845.21

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Solution

The fourth proportional to 479,709.72, 661,995.18 and 264,845.21 is: 365,484.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,709.72 : 661,995.18 = 264,845.21 : x
  2. Step 2: Convert to fraction form
    479,709.72/661,995.18 = 264,845.21/x
  3. Step 3: Cross multiply
    479,709.72x = 661,995.18 × 264,845.21
  4. Step 4: Simplify right side
    479,709.72x = 175,326,249,156.11
  5. Step 5: Solve for x
    x = 175,326,249,156.11/479,709.72
  6. Step 6: Final answer
    x = 365,484.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.